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Kennedy Dzama   Professor  Senior Scientist or Principal Investigator 
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Kennedy Dzama published an article in July 2016.
Top co-authors See all
M. Chimonyo

34 shared publications

University of KwaZulu-Natal, South Africa

Farai C. Muchadeyi

17 shared publications

Biotechnology Platform, Agricultural Research Council, Onderstepoort, South Africa

Oswald Matika

16 shared publications

University of Edinburgh Roslin Institute

Valentina Riggio

6 shared publications

University of Edinburgh

P. I. Zvinorova

3 shared publications

Department of Animal Sciences, University of Stellenbosch, Private Bag X1, Matieland, 7602, South Africa;;; Department of Para-clinical Veterinary Studies, University of Zimbabwe, P.O. MP167, Mt. Pleasant, Harare, Zimbabwe

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119
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Publication Record
Distribution of Articles published per year 
(2006 - 2016)
Total number of journals
published in
 
5
 
Publications See all
Article 0 Reads 93 Citations Breeding for resistance to gastrointestinal nematodes – the potential in low-input/output small ruminant production syst... P.I. Zvinorova, T.E. Halimani, F.C. Muchadeyi, O. Matika, V.... Published: 01 July 2016
Veterinary Parasitology, doi: 10.1016/j.vetpar.2016.05.015
DOI See at publisher website PubMed View at PubMed ABS Show/hide abstract
Highlights•Resistance to anthelmintic in small ruminants is documented worldwide.•Genetic to GIN have been studied in experimental and commercial flocks.•Limited in low-input low-output farming systems.•Nematode eradication has evolved to manipulation of host-parasite equilibrium.•Selection for resistant hosts can be considered a sustainable control strategy AbstractThe control of gastrointestinal nematodes (GIN) is mainly based on the use of drugs, grazing management, use of copper oxide wire particles and bioactive forages. Resistance to anthelmintic drugs in small ruminants is documented worldwide. Host genetic resistance to parasites, has been increasingly used as a complementary control strategy, along with the conventional intervention methods mentioned above. Genetic diversity in resistance to GIN has been well studied in experimental and commercial flocks in temperate climates and more developed economies. However, there are very few report outputs from the more extensive low-input/output smallholder systems in developing and emerging countries. Furthermore, results on quantitative trait loci (QTL) associated with nematode resistance from various studies have not always been consistent, mainly due to the different nematodes studied, different host breeds, ages, climates, natural infections versus artificial challenges, infection level at sampling periods, among others. The increasing use of genetic markers (Single Nucleotide Polymorphisms, SNPs) in GWAS or the use of whole genome sequence data and a plethora of analytic methods offer the potential to identify loci or regions associated nematode resistance. Genomic selection as a genome-wide level method overcomes the need to identify candidate genes. Benefits in genomic selection are now being realised in dairy cattle and sheep under commercial settings in the more advanced countries. However, despite the commercial benefits of using these tools, there are practical problems associated with incorporating the use of marker-assisted selection or genomic selection in low-input/output smallholder farming systems breeding schemes. Unlike anthelmintic resistance, there is no empirical evidence suggesting that nematodes will evolve rapidly in response to resistant hosts. The strategy of nematode control has evolved to a more practical manipulation of host-parasite equilibrium in grazing systems by implementation of various strategies, in which improvement of genetic resistance of small ruminant should be included. Therefore, selection for resistant hosts can be considered as one of the sustainable control strategy, although it will be most effective when used to complement other control strategies such as grazing management and improving efficiency of anthelmintics currently.
Article 0 Reads 8 Citations Genome-wide association study of tick resistance in South African Nguni cattle N.O. Mapholi, A. Maiwashe, O. Matika, V. Riggio, S.C. Bishop... Published: 01 April 2016
Ticks and Tick-borne Diseases, doi: 10.1016/j.ttbdis.2016.02.005
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Article 0 Reads 9 Citations Towards a genomics approach to tick (Acari: Ixodidae) control in cattle: A review Ntanganedzeni O. Mapholi, Munyaradzi C. Marufu, Azwihangwisi... Published: 01 September 2014
Ticks and Tick-borne Diseases, doi: 10.1016/j.ttbdis.2014.04.006
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Article 0 Reads 6 Citations Opportunities for conservation and utilisation of local pig breeds in low-input production systems in Zimbabwe and South... Tinyiko Edward Halimani, Farai C. Muchadeyi, Michael Chimony... Published: 26 May 2012
Tropical Animal Health and Production, doi: 10.1007/s11250-012-0177-2
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Article 0 Reads 0 Citations Genetic analyses for growth traits of two indigenous beef cattle breeds in Botswana Genetic analyses for growth traits o... K. Raphaka, K. Dzama Published: 01 April 2010
Livestock Science, doi: 10.1016/j.livsci.2010.01.024
DOI See at publisher website
Article 0 Reads 6 Citations Pig genetic resource conservation: The Southern African perspective T.E. Halimani, F.C. Muchadeyi, M. Chimonyo, K. Dzama Published: 01 March 2010
Ecological Economics, doi: 10.1016/j.ecolecon.2010.01.005
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